Laserfiche WebLink
12t. <br />Ilr T. <br />ti ' <br />ATTIC VENTILATION CALCULATIONS <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <br />1/150 Rule <br />1/300 Rule <br />Ridge <br />Off -Ridge <br />(No Upper Ventilators <br />(Must Provide Upper Ventilators) <br />Vent Amt <br />Amt. <br />Req) <br />(Ft) <br />Total <br />Ventilation <br />ATTIC <br />Provided <br />SPACE <br />SQ. FT. <br />Total SQ. <br />SO. FT. <br />SQ. IN. of <br />b Upper <br />Y PPe <br />SQ. IN. of <br />of vented <br />IN. of <br />of <br />ventilation to <br />SO. IN. of <br />SQ. IN. of <br />Ventilators <br />ventilation <br />required soffit <br />ventilation <br />vented <br />soffit <br />be provided <br />by upper <br />Ventilation <br />Ventilation <br />SElev <br />(See ) <br />needed <br />required <br />needed <br />ventilators <br />Main <br />19.000000 <br />2.000000 <br />Floor <br />2276 <br />2185 <br />312 <br />1092 <br />78 <br />546 <br />561.0 <br />285.0 <br />276.0 <br />(Zone 1) <br />"NOTE" <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVESISOFFITS AS <br />REQUIRED BY FBC 6th ED. RESIDENTIAL. <br />ROOF PLAN — ELEV—B1 <br />SCALE: 74 "=1'-0" <br />Attic Ventilation <br />Attic Ventilation to be in compliance with the Florida Building Code 7th Edition <br />(2020) Residential R806. <br />The Minimum net free ventilating area shall be 1/150 of the area of the vented <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />but no more than 50% of the required ventilation is provided in the upper portion of <br />the space to be ventilated. Upper ventilators shall be located no more than 3 feet <br />(measured vertically) below the ridge or highest point of the space, with the <br />balance of the required ventilation provided by eave or cornice vents. <br />"CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN' <br />(Values to be verified with Manufacturer Specifications) <br />• OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS - 7 SO. IN. OF NET FREE AREA / SO. FT. <br />• STUCCO SOFFIT VENTS - 126 SO. IN. OF NET FREE AREA / 80. FT. <br />•If not enough vented soffit is provided due to fire protection, the contractor shall use the <br />following approved vents: <br />• LOMANCO DECK -AIR (Shingle Root) - 9 SO. IN. OF NET FREE AREA / FT. <br />"Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) / 9 = Linear FL of beck -Air Needed) <br />• <br />v Q <br />v N (ON <br />U ; 40. 4 <br />S P <br />r <br />�'• <br />�� <br />••.,, L Q <br />4 .••" <br />to <br />S <br />; <br />,1 <br />! 101 <br />f!! 1! 1 <br />To the best of the Engirisees knowledge, information and ballet, <br />the structural plans and specifications contained within these <br />drawings comply with the 2020 Florida Building Code - <br />Residential 7th Edition. Engineers signature and seat is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineers signature and seal. <br />� <br />W <br />H <br />w <br />� E <br />N p # <br />N <br />0 <br />fA <br />��,$co �, :a`L a <br />r30r.rr-0 w <br />LL a <br />dCv <br />tY� <br />LL LL d w S <br />V <br />•f• <br />0 <br />g7 �g55 0 <br />L l�0 S IN S <br />jpC, m <br />�0 <br />z <br />us <br />a <br />N C" Z rn 0 <br />USN <br />Z <br />W <br />O0 <br />❑0❑ <br />0 <br />Z gN <br />Z gd <br />Z FZ- <br />J <br />2 � <br />N <br />uJ <br />V <br />f� <br />W <br />U <br />� <br />0 O <br />W N <br />_ O <br />U <br />c <br />Q <br />• <br />� <br />74 <br />m <br />Cn <br />o <br />ch <br />0 <br />J <br />LL <br />i <br />-0 <br />OF <br />f <br />ZB <br />~ <br />�I <br />R` <br />°w° <br />� <br />z <br />CN g M <br />i <br />a� <br />g�s <br />c <br />C <br />0 <br />�. <br />UU <br />HO <br />gLL <br />hh <br />}Z <br />za3 <br />W <br />L <br />SO <br />ii <br />v <br />Z5'p��ly� <br />UI <br />O <br />L <br />Lo <br />4.V <br />L <br />c <br />m <br />�> <br />U <br />LPL <br />O <br />C <br />mo <br />o <br />CO <br />r <br />m 0p <br />T <br />Ln <br />O) <br />E <br />c. <br />N <br />th <br />Z <br />Z <br />a <br />E O <br />0 <br />m <br />¢ p <br />JOB <br />NO: <br />20-8092 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />